It's a fact: People falling off of something called the Rotating Surfboard of Death face-first into muddy water is just plain funny. And it's made even funnier when said people happen to be competing on a crazy old Japanese game show that has been dubbed (not translated, mind you, but dubbed willy-nilly) for American audiences. You see, MXC: Most Extreme Elimination Challenge (Unrated, 262 mins., 2003) isn't just about people bashing their heads into rolling logs and jumping crotch-first onto rocks...well, okay, it is mostly about that. But the Americanized personalities of Vic Romano, Captain Tenneal, and Co. make the play-by-play commentary as entertaining as the actual challenges themselves. The reason it works is because the actors stay away from making fun of or even acknowledging Japanese culture or contestants. ''That is our one rule,'' says a producer on a commentary track. ''We do not ever make any Asian references ever.'' Of course, one of the great mysteries has always been, What are the hosts and contestants on that old Japanese game show really saying? Which is why the inclusion of a subtitled episode of the original series, Takeshi's Castle, is such a tasty treat.